Important Java program with source code

Hello friend's following URL provide a lots of important java code snipped which
are mostly required for any java developed and beginner. for example

1) How to work with JSON object in java
2) How to send email using java
3) How to create PDF in java
4) Creating ZIP and JAR file in java,
5) Convert String to Date
6) Parsing / Reading XML file in java
7) Convert Array To Map in java
8) Re-size an Array in java.
9) Capture screen shots using java.
10) Fast file copy using NIO. and many more example...

URL :
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http://viralpatel.net/blogs/20-useful-java-code-snippets-for-java-developers/

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